Refueling nozzle



Sept. 5, 1944. J. A. JENSEN v REFUELING NOZZLE Filed March 25. 1942 2 Sheets-Sheet l l INVENTOR; Jai/1195A fk/Iseli, 'BY '/LUZ M lATTORNEYS.

5a. Aff..

Sept.` 5, 1944. .1. A. JENSEN REFUELING NOZZLE Filed March 25, 1942 2 Sheets-Sheet 2 www mj n A M a m J L Patented Sept. 5, 1944 `2,357,657V Y REFUELING Nozzn James A. Jensen, Philadelphia, Pa., assignor to Charles E.,Frick, J. Rodman McCoy, John H. Jensen, James A. Jensen, Emerson`F.`Davis, executor andy ancillary executorvunder the willy of George M. Heller, deceased, Guy v'.B. Frick,U 'Charles E. Frick, Jr., G. Donald Whyte, and Fred J. Stackpole, copartners, as their,V interest may appear therein, trading under the name of4 Philadelphia Valve Company, Philadelphia,

Application March 25, 194.2, serial-No. 425.6,089` Y '4 colaims. (o1. 13j- 13er This invention relates to valved nozzles of a type especially useful in connection with the refueling of airplanes, automobilesand the like, with gasoline, oil or otherfluids delivered under pressure from a storage supply source.

A In theordinary types of nozzles'heretofore de-` signed for the abovepurpose, the control valves are disposed orosswise of the direction of flow of the .liquids in the nozzle bodies. Accordingly, abrupt angles had to be traversed by the liquids,

which greatly impeded their flow and corre-v spondinglydetracted from the operative efciency of the nozzles. Moreover, closingV of the valves in the prior art nozzles was attended by jars and shocks due to sudden checking of the fluid ow.

Thev chief aim. of my invention is to overcome the above drawbacks, which desideratum I attain as hereinafter more fully disclosed,vby forming the body of the nozzle with a continuously smooth internal flow passage of ogee or S-shaped configuration, by providing dash-pot means for retarding the closing movement of the valve under therinuence of a yielding means which normally tends to hold said valve closed in the direction o f fluid flow through the nozzle body; and by providing a smaller auxiliary relief valve and means whereby it is opened ahead of the first mentioned or main valve to relieve the dash-pot means and thereby allowv quick opening of saidmain valve.

Other objects and attendant advantages will appear from the following description of the attached drawings, wherein' Fig. 1 is a View partly in side elevation and partly in axial section, of a refueling nozzle conveniently embodying the present improvements, with its main flow control valve in full open position.

Fig. 2 shows the rear end elevation of the nozzle, or as said nozzle appears when viewed from the right of Fig.A 1.

Fig. 3 is a fragmentary View corresponding to Fig. 1, with the main and auxiliary valves of the nozzle both in closed position; and

Fig. 4 is a fragmentary sectional view showing important structuraldetails of a filtering element associated with the nozzle.

As herein illustrated, Amy improved refueling nozzle has a body I with a continuously smooth Y flow passage 2 of ogee configuration extending through it from. its inlet 3 to its outlet 4. Arranged for movement axially of the medial portion Ia ofthe body Iy is a main valve which is comprehensively designated by-the numeral 5.- In

body I, and is secured by a plurality of screw v its construction this main valve 5 includes-va cuplike component Shaving attached'to itsvbase end a washer 'I of a suitable elasticcomposition which closes against an annular'seatV 8 within the body :A I in the direction of fluid flow through the passage 2.y The cup member 6 Aof the valve 5 has a central aperture 9,. and a projecting threadedneck I0, the' latter being engaged by a cap piece Il with a circumferential disk flange I2 which bearsupon the-outer face of the washer I to secure it. From Fig. 3Vit will be noted that the diameter of the disk-fiange I2 is such as to enter the neck of the body immediately ahead-of the Y seat 8 with a rather 4close fit when thezvalve is in closed position. The purpose ofthisaarrangef a purpose later on explained, with an annular series of apertures I3. Arranged to cooperate with a beveled seat I5 around the inner end of the opening 9 is a smaller auxiliary valve I6- with a luted shank II snugly fitting slidingly into said opening. The cup 6 engages fluid tightly over a fixed reversely-positioned cup I8 interiorly` of the nozzle body I; and axially disposed within the cup I8 is a yielding member in the form of a helical compression spring I9, whereof one end bears/against the bottom of saidcup, and whereof the other 1 end bears against a' flange disk 20- attached to the auxiliary-*valve I6. It will be seen from Fig. 3 that under Ythe influence of the spring- I9, the main valve 5 and the auxiliary valve I6l are both yieldingly heldin closed position nor.

mally.

TheV inlet 3-is internally threaded for attach-y mentof a hose H leading from a pressure source of fluid supply (not shown) and for convenience. of manufacture separately formed, being provided witl'i a circumferential flange 2l, which, with.

interposition of -a sealing gasket 22., abuts against a smaller ange23 on the main section of said bolts whereofone is shown at 25. InY the illus.Y

trated instance the cup I8 is integrally formed .with the end section 3 of the nozzle body I and connected thereto by, a-few` thi-n short radial ribs 26. It is to be especiallynoted that in the region of the valve 5, the diameter.v of the nozzle body I isenlarged as at 2lso that ample circumferential space is provided for free flow of l the liquid around said valve, the innersurface` f of the enlargement merging through smooth.

liberal curves with rthe other portions of the passage 2; Fluid flow through the nozzle is further eased throughtaperingof the rearend cap and the nozzle body I.

of the cylinder I8Aas at 29, and by reason of the fact that the connecting ribs 26 are rounded and of small cross section so as to be substantially.

is advantageous in that adjustments of the pin v valve 3| may be made without necessitating dismantling any of the parts of the nozzle.

An integral loop 35 on the nozzle body aords a grasp handle 36 which is internally threaded as at 31 to receive a screw tip 38 at one end of a flexible grounding wire or cable 39. To the other end of the cable 39 is suitably attached a plug 40.

As shown in Fig. 1, the side portion 43 of the loop 35 is hollow and its inner wall provided with an opening 44 through which a valve actuating lever 45 extends into parallel relation with the handle portion 36 of said loop. The lever 45 is fulcrumed at 46 and provided with a linger projection 41 which is normally contacted by the outer end of a valve actuating stem 48 pro-- truding through a stung box 49 in the Wall of the nozzle body I. At its inner end, to which the auxiliary valve I6 is connected, the stem 48 is'I reduced in diameter with resultant formation of a shoulder at l), and said reduced portion guided in an axial aperture 5| in the cap I I. The opposite side portion 52 of the loop 35 is Aslotted as at 53, as clearly shown in Fig. 2, for projection thereinto of the outer end of the valve actuating lever 45, said slot being formed at intervals along one edge with stops 55 for engagement by the lever to hold the valve 5 in different positions of adjustment.

The outlet 4 oi' the nozzle body is internally threaded for retainment of a bushing 56 which is itself internally threaded to receive the neck end 51 at the top of a coupling sleeve 58. As shown the sleeve 58 is formed with a polygonal head 59 which provides an annular shoulder face to clamp a gasket 60 against the mouth edge of the outlet 4. Threaded into the sleeve 58 is a tubular spout 6 I and normally closing said spout at the bottom is a cap 62 which is held in place by a flexible connection comprising a chain 63 and a helical spring 64 whereto the chain is joined at one end, the remote ends of said chain and spring being connected to lugs 65 and 66, respectively, on said Disposed within the spout is a downwardly tapering filter element 61 having an outer foundation component 68 of coarse wire mesh (Fig. 4) and a lining 69 of relatively ne wire mesh, said foundation component and lining being welded or otherwise secured to a icircumferentially flanged ring 16 which is clamped betweenthe bottom of the bore in the outlet 4 of the nozzle body I and the top end of the sleeve 59 to hold the lter element in place. By virtue of the described construction it will be seen that the spout and the filter element can be removed from the nozzle whenever cleaning of the screening becomes necessary. The bushing 56 I employ only in cases where the valve body is of a relatively soft metal such as aluminum which would -be liable to rapid wear from frequent unscrewing of the spout. In other cases the nozzle may be directly engaged with the outlet 4. Thetapering of the filter element as shown is advantageous in that liberal space is provided thereabout within the spout with consequent minimization of the resistance to free uid ow through the latter.

As previously stated, the main valve 5 and the vauxiliary valve I6 are normally held in closed lposition under the influence of a spring I9 as shown in Fig. 3. To operate the nozzle, the actuating lever is drawn upward from the normal position in which it is shown in dot-anddash lines in Fig. 1, such movement of said lever being attended by inward axial shifting of the valve stem 48. At the initiation of this shift of the stem 48, the auxiliary valve I6 is rst opened so that liquid may by-pass through the dash-pot jointly formed by the two cylinders 6 and I8 via the bleed-duct 30, the port 9 and the openings I3 in the cap II so as to make quick opening of the main valve 5 possible. As the inward movement of the stem 48 continues, the shoulder 50 on the latter contacts the outer end of the cap II, with the result that the main valve 5 is bodily displaced from the seat 8 and is fully opened when the actuating rlever 45V reaches the position in which it is shown in full lines in Fig. 1. By selective engagement of the end of the actuating lever 45 with the stops 55, the valve 5 may be locked in correspondingly different positions of opening. To interrupt the flow from the nozzle, the actuating lever 45 is moved to the dot-and-dash position in Fig. 1 with attendant release of the valve stem 48 from manual control, and instant closing of the auxiliary valve I8 by the spring I9. The main valve 5 does not, however, immediately follow suit due to the retalding ei'ect of the dash-pot, and to the entry of the disk flange I2 into the neck of. the nozzle body in advance of the final contact of the washer 1 with the seat 8, so that the .ow through theY nozzle is gradually interrupted with avoidance of sudden shocks or jars, the time required for closing being preideterminable byA adjustment of the pin valve 3| in the bleed-duct 30.

,Having thus described my invention, IA claim:

1. A dispensing nozzle having a straight hollow body portion between smoothly-mergent communicating tubular inlet and outlet portions of Ismaller diameter; a valve in the form of a cup whereof the base closes against an annular seat at one end of the body; a fixed reversely-positioned cup-like guide axially within the body with which the cup valve has a sliding fit; yielding means in compression between the valve and its guide for normally holding the valve closed; actuating means externally of the body permitting independent movement of the valve in closing; and a bleed duct providing restricted communication between the flow passage of the body and the interior of the dash pot jointly formed by the valve and its guide for retardation of the closing movement of the valve,

2. A dispensing nozzle according to claim 1, further including `adjustable means accessible exteriorly of the bodyvfor regulating ow through the bleed duct. I Y

3. A dispensing nozzle according toclaim l, wherein the base of the cup valve has an axial port; wherein an auxiliary valvenormally en,- gages a seat around the axialportoithe main valve interiorly of the latter; wherein the auxiliary valve has a stem extending through a fluidtight opening in the wallof the body for engagement by the actuating means; wherein theinner.

end of the stern passes through a guide on the main valve. with allowance for a limited amount of lost motion between the outer end of said guide and a shoulder on said stem sothat the auxiliary valve will be opened before the main valve; and wherein the yielding means is in compression between the auxiliary valve and the bottom of the cup-like guide for the main valve.

4. A dispensing nozzle according to claim 1, further including means for regulating flow through the bleed duct; and an opening in the side of the body normally closed by a removable plug, through which access may be had to the regulating means for the purposes of adjust.

ment.

5. A dispensing nozzle according to claim. 1, wherein the base of the cup valve has an axial port; wherein an auxiliary valve normally engages a seat around the axial port of the main valve interiorly of the latter; wherein the auxiliary valve has a stem extending through a uidtight opening in the wall of the body for engagment b-y the actuating means; wherein the main valve is connected to the stem with capacity for a limited amount of 10st motion so that the auxiliary valve will be opened before the main valve; and wherein the yielding means is in compression between the auxiliary valve and the bottom of the cup-like guide for the main valve. Y 6. A dispensing nozzle according to claim 1, wherein the axes of the inlet and outlet portions of the nozzle are oppositely disposed at acute and obtuse angles respectively to the axis of the body.

JAMES A. JENSEN. 

